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OpenCloudOS-Kernel/arch/x86/mm
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Nikita Zhandarovich cbebd68f59 x86/mm: Fix use of uninitialized buffer in sme_enable() 
cmdline_find_option() may fail before doing any initialization of
the buffer array. This may lead to unpredictable results when the same
buffer is used later in calls to strncmp() function.  Fix the issue by
returning early if cmdline_find_option() returns an error.

Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.

Fixes: aca20d5462 ("x86/mm: Add support to make use of Secure Memory Encryption")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/20230306160656.14844-1-n.zhandarovich@fintech.ru
 		2023-03-16 12:22:25 +01:00
..
pat - Daniel Verkamp has contributed a memfd series ("mm/memfd: add 2023-02-23 17:09:35 -08:00
Makefile x86: kmsan: handle CPU entry area 2022-10-03 14:03:26 -07:00
amdtopology.c x86/mm: Replace nodes_weight() with nodes_empty() where appropriate 2022-04-10 22:35:38 +02:00
cpu_entry_area.c prandom: remove prandom_u32_max() 2022-12-20 03:13:45 +01:00
debug_pagetables.c mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
dump_pagetables.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
extable.c x86: simplify load_unaligned_zeropad() implementation 2022-08-16 11:03:38 -07:00
fault.c Revert "x86: kmsan: sync metadata pages on page fault" 2023-02-02 22:33:01 -08:00
highmem_32.c x86/mm/highmem: Use generic kmap atomic implementation 2020-11-06 23:14:55 +01:00
hugetlbpage.c arch/x86/mm/hugetlbpage.c: pud_huge() returns 0 when using 2-level paging 2022-11-08 15:57:25 -08:00
ident_map.c x86/mm/ident_map: Check for errors from ident_pud_init() 2020-10-28 14:48:30 +01:00
init.c x86/mm: fix poking_init() for Xen PV guests 2023-01-12 11:22:20 +01:00
init_32.c x86: mm: rename __is_kernel_text() to is_x86_32_kernel_text() 2021-11-09 10:02:51 -08:00
init_64.c mm/sparse-vmemmap: generalise vmemmap_populate_hugepages() 2022-12-11 18:12:12 -08:00
iomap_32.c io-mapping: Cleanup atomic iomap 2020-11-06 23:14:58 +01:00
ioremap.c x86/ioremap: Fix page aligned size calculation in __ioremap_caller() 2022-11-22 12:21:16 +01:00
kasan_init_64.c x86/kasan: Populate shadow for shared chunk of the CPU entry area 2022-12-15 10:37:28 -08:00
kaslr.c x86: Fix various typos in comments 2021-03-18 15:31:53 +01:00
kmmio.c x86/mm/kmmio: Remove redundant preempt_disable() 2022-12-12 10:54:48 -05:00
kmsan_shadow.c x86: kmsan: handle CPU entry area 2022-10-03 14:03:26 -07:00
maccess.c x86: Share definition of __is_canonical_address() 2022-02-02 13:11:42 +01:00
mem_encrypt.c virtio: replace arch_has_restricted_virtio_memory_access() 2022-06-06 08:22:01 +02:00
mem_encrypt_amd.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
mem_encrypt_boot.S x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros 2022-12-15 10:37:27 -08:00
mem_encrypt_identity.c x86/mm: Fix use of uninitialized buffer in sme_enable() 2023-03-16 12:22:25 +01:00
mm_internal.h x86/mm: thread pgprot_t through init_memory_mapping() 2020-04-10 15:36:21 -07:00
mmap.c x86/mm/mmap: Fix -Wmissing-prototypes warnings 2020-04-22 20:19:48 +02:00
mmio-mod.c x86: Replace cpumask_weight() with cpumask_empty() where appropriate 2022-04-10 22:35:38 +02:00
numa.c x86/numa: Use cpumask_available instead of hardcoded NULL check 2022-08-03 11:44:57 +02:00
numa_32.c x86/mm: Drop deprecated DISCONTIGMEM support for 32-bit 2020-05-28 18:34:30 +02:00
numa_64.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
numa_emulation.c x86/mm: Replace nodes_weight() with nodes_empty() where appropriate 2022-04-10 22:35:38 +02:00
numa_internal.h
…
pf_in.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pf_in.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pgprot.c x86/mm: move protection_map[] inside the platform 2022-07-17 17:14:38 -07:00
pgtable.c mm/pgtable: Fix multiple -Wstringop-overflow warnings 2022-12-01 08:50:38 -08:00
pgtable_32.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
physaddr.c mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions 2019-12-10 10:12:55 +01:00
physaddr.h
…
pkeys.c x86/pkeys: Clarify PKRU_AD_KEY macro 2022-06-07 16:06:33 -07:00
pti.c x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros 2022-12-15 10:37:27 -08:00
srat.c
…
testmmiotrace.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
tlb.c x86/cpu: Use cpu_feature_enabled() when checking global pages support 2023-01-25 10:32:06 +01:00